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Combined Sets

1st 9-Weeks DA 7th Grade Science Review 2019 - 20

TermDefinition
INTEGUMENTARY SYSTEM Reacts to external environmental conditions & protects the body’s deeper tissues.
MUSCULAR SYSTEM Allows body to move & provides strength, balance, & warmth.
SKELETAL SYSTEM Holds organs in place, provides structural support, stores minerals, & generates new blood cells.
RESPIRATORY SYSTEM Breathing that supplies oxygen to the blood & gets rid of carbon dioxide.
CIRCULATORY SYSTEM Circulates blood through the body, supplies oxygen & nutrients, & removes waste.
NERVOUS SYSTEM Functions as the control center, coordinating all the actions & reactions.
ENDOCRINE SYSTEM Regulates the body by secreting hormones into the bloodstream; also controls growth, reproduction, & metabolism.
DIGESTIVE SYSTEM Group of organs that work together to break food down by physical & chemical processes into nutrients that the body can use.
EXCRETORY SYSTEM Filters, collects, & removes excess fluids & wastes from the bloodstream.
REPRODUCTIVE SYSTEM Male & female systems used to produce offspring.
IMMUNE/LYMPHATIC SYSTEM System of organs that protects the body from foreign substances & pathogenic organisms by producing the immune response.
CELL Basic structural and functional unit of living organisms.
TISSUE Large mass of similar cells that make up a part of an organism and perform the same specific function.
ORGAN Large collection of similar tissue that make up a part of an organism and performs a specific and specialized function of the body.
ORGAN SYSTEM Composed of several organs working together to perform specific and vital functions.
ORGANISM Individual form of life that is capable of growing, taking in nutrients, and usually reproducing (organ systems working together); self-contained living thing.
ORGANELLE Tiny cell structure that carries out a specific function within the cell.
POPULATION Group of individuals of the same species that live in the same area.
CELL MEMBRANE Thin tissue that forms the outer surface of the cytoplasm of a cell & regulates the passage of substances & materials in & out of the cell.
NUCLEUS Organelle found in eukaryotic cells that contains genetic material responsible for controlling the activities of the cell.
CYTOPLASM Jellylike & fluid material that makes up much of a cell inside the cell membrane, surrounds the nucleus in eukaryotic cells, & in which the organelles are suspended; cyto = hollow
MITOCHONDRION Organelle in the cytoplasm of eukaryotic cells that functions in energy production - power factory of the cell.
VACUOLE Organelle that stores water & nutrients in both plant & animal cells; 1 large central unit in plant cells, but many small units in animal cells.
CHLOROPLAST Green organelle in plant cells that converts light energy into chemical energy (Photosynthesis); chlor = green; plast = small particle
CELL WALL Rigid structure that surrounds the cell membrane of a plant cell to give it support & protection.
CELLULAR RESPIRATION Process of obtaining energy from the breaking of chemical bonds in nutrients; respire = breathe
PHOTOSYNTHESIS Chemical reaction in which plants convert radiant energy into chemical energy; also converts carbon dioxide & water into oxygen & glucose; photo = light; synthesis = combine
CELL THEORY Widely accepted explanation of the relationship between cells & living things; explains that the cell is the fundamental structural & functional unit of living matter.
CELL DIVISION Process by which a cell divides into 2 new daughter cells.
MICROSCOPE Device that produces magnified images of structures that are too small to see with the unaided eye.
Created by: trauberk